1351581166 has 16 divisors (see below), whose sum is σ = 2189192544. Its totient is φ = 622129824.

The previous prime is 1351581139. The next prime is 1351581173. The reversal of 1351581166 is 6611851531.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59986 + ... + 79381.

It is an arithmetic number, because the mean of its divisors is an integer number (136824534).

Almost surely, 2^1351581166 is an apocalyptic number.

1351581166 is a deficient number, since it is larger than the sum of its proper divisors (837611378).

1351581166 is a wasteful number, since it uses less digits than its factorization.

1351581166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139755.

The product of its digits is 21600, while the sum is 37.

The square root of 1351581166 is about 36763.8567889714. The cubic root of 1351581166 is about 1105.6407675666.

The spelling of 1351581166 in words is "one billion, three hundred fifty-one million, five hundred eighty-one thousand, one hundred sixty-six".